Pv Module Loss Analysis Using System In-Situ Monitoring Data

Keywords

current mis-match; degradation; in situ I-V; OSI; PI system; power loss; power loss partition; series resistance; Suns Voc

Abstract

Outdoor PV module monitoring has been widely applied for fault detection and degradation analysis of today's PV systems. As the monitoring resolution increases, module-level {I-V} tracing becomes more common, which allows the in-situ monitoring of PV module level performance during system operation. In this work, we present a method to store and process the in-situ monitoring data for an outdoor PV system. OSIsoft PI system is used for data storage and organizing. Self-developed algorithms are implemented in Python for data extraction and processing. The power loss on different mechanisms are evaluated then calculated from 62 of the module level {I-V} tracers. The method proposed in this work can be very useful for degradation analysis of PV modules and systems.

Publication Date

11-26-2018

Publication Title

2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

Number of Pages

2204-2208

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/PVSC.2018.8548187

Socpus ID

85059902075 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85059902075

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